Your right you have to make sure the purity of gold is 99.999% In the yahoo group there are a few different designs that you can choose from. You can find them under files, the guy karl who got all this going also gives a place where you can purchase a good pure gold. some people get canadian maple leaf coins because they are i think 99.999 pure. I would feel better if someone is serious about making CG to do all the research cause it is very dangerous you can actually kill yourself. The power to make gold is much greater than it takes to make Colloidal Silver , and wouldnt want to post the directions on how to make it without them first reading all the other stuff but the yahoo group is called cg_exchange. I forgot to post also that my mom said that she had a sense of well being the day after. I didnt really get that because (i think) im taking Iodine too. But i think my mind is a little clearer. I will keep you guys posted cause sometimes when i first start taking thing 3 months later im not taking it for whatever reason.